Josephson Effect in Hybrid Oxide Heterostructures with an Antiferromagnetic Layer

P. Komissinskiy; G. A. Ovsyannikov; I. V. Borisenko; Yu. V. Kislinskii; K. Y. Constantinian; A. V. Zaitsev; D. Winkler

doi:10.1103/PhysRevLett.99.017004

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Josephson Effect in Hybrid Oxide Heterostructures with an Antiferromagnetic Layer

P. Komissinskiy, G. A. Ovsyannikov, I. V. Borisenko, Yu. V. Kislinskii, K. Y. Constantinian, A. V. Zaitsev, D. Winkler

DOI 10.1103/PhysRevLett.99.017004 · Physical Review Letters

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Abstract

Josephson coupling between an s- and d-wave superconductor through a 50 nm thick Ca1−xSrxCuO2 antiferromagnetic layer was observed for the hybrid Nb/Au/Ca1−xSrxCuO2/YBa2Cu3O7−δ heterostructures and investigated as a function of temperature, magnetic field, and applied millimeter-wave electromagnetic radiation. The magnetic field dependence of the supercurrent Ic(H) exhibits anomalously rapid oscillations, which is the first experimental evidence of the theoretically predicted giant magneto-oscillations in Josephson junctions with antiferromagnetic interlayers.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown